Electron beam generation in a magnetron diode with metal secondary-emission cathode

The effects of electric and magnetic field intensities, the triggering-pulse droop rate, and the electrode diameter on the processes of electron beam formation and generation were studied experimentally. The results of mathematical simulation of the secondary-emission multiplication of the electron flow are presented. Tubular electron beams with a wall thickness of 1.5–2 mm, a current density of 1–70 A/cm2, and a particle energy of 5–100 keV were obtained. It was shown that several electron bunches could be obtained during a single voltage pulse.